<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .demo {
            /* w100 */
            width: 100px;
            /* lh26 */
            line-height: 26;
            /* tdn */
            text-decoration: none;
        }
    </style>
</head>

<body>
    <!-- .demo$*5 -->
    <div class="demo1"></div>
    <div class="demo2"></div>
    <div class="demo3"></div>
    <div class="demo4"></div>
    <div class="demo5"></div>
    <!-- div{sdjnsnf}*5 -->
    <div>sdjnsnf</div>
    <div>sdjnsnf</div>
    <div>sdjnsnf</div>
    <div>sdjnsnf</div>
    <div>sdjnsnf</div>
    <!-- div{$}*5 -->
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
    <div>5</div>
    <!-- .demo -->
    <div class="demo"></div>
    <!-- #fg -->
    <div id="fg"></div>
    <!-- p.sss -->
    <p class="sss"></p>
</body>

</html>